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Legend (WQCD/Groundwater_Vulnerability_Tool)

Drinking water well permits (ft) (0)
<50 <50
51 - 100 51 - 100
101 - 500 101 - 500
>500 >500
OPS_Releases (2)
OPS_Tier3_Tier4 (3)
OPS_LUST (4)
OPS_Hydrogeo_Sampling (5)
ERAMS median nitrate (mg/L) (7)
<=10 <=10
>10 >10
COGCC Well Water Samples (8)
Multiple analytes Multiple analytes
Underground injection wells (9)
Alluvial aquifer boundary (10)
Alluvial_Aquifer_Vulnerability (11)
Low Low
Moderately Low Moderately Low
Moderate Moderate
Moderately High Moderately High
High High
Bedrock aquifer boundary (12)
Bedrock_Aquifer_Vulnerability (13)
Low Low
Moderately Low Moderately Low
Moderate Moderate
Moderately High Moderately High
High High